Door construction



Nv E9, 35. J. F. PEELLE I 229375 DOOR CONSTRUCTION Filed July 9, 1934 5In z rfv?" nventor;

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Gttorneg Patented Nov. 19, 1935 o UNITED STATES PATENT OFFICE 2,021,375DOOR CONSTRUCTION James F. Peelle, Richmond, Ind. Application July 9,1934, Serial No. '734,316

6 Claims.

One object of my invention is the provision of a metal covered doorwhich will withstand extremely high temperatures when exposed to flamesbeing directed thereagainst.

Another object of my invention is to provide a door construction whichwill permit gas, which is generated by heat, to escape from the doorwithout the usual buckling and bulging of the metal covering.

Another object of my invention is the provision of a door which willmeet with the most exacting requirements of safety ordinances, and tosafeguard the lives of the occupants of a building in case of fire.

Another object of my invention is the provision of a door constructionin which the frame members of the door are secured together, and forminga substantially one-piece door.

Still another object of my invention is the provision of a metal covereddoor which is economical to manufacture and which is attractive inappearance.

Other objects and advantages of my invention will suggest themselves inthe course of the following description, and that which is new will becorrelated in the appended claims.

The most satisfactory manner of carrying out the principles of myinvention in a practical, economical, comprehensive and eicient manneris shown inthe accompanying one sheet of drawings, in Which- Figure l isan elevation of a my construction.

Figure- 2 is a detail cross section taken on the lines 2-2 of Figure l.

Figure 3 is a detail cross section taken on the line 3--3 of Figure 1.

Figure 4 is a detail line 4--4 of Figure 1.

Figure 5 is a partial elevation of the upper left hand corner of thedoor, but on an enlarged scale.

Figure 6 is a plan View of the upper left hand edge of the door takenfrom the line 6-6 of Figure 5.

Figure 7 is a detail section taken on the line 1-1 of Figure 5.

Figure 8 is a detail section through one of the stiles before the metalcovering is applied thereto.

Similar indices designate like parts throughout the several views. f

In order that the construction and the advantages of my door may be morefully understood and appreciated, I will now take up a detaileddescription thereof, in which I will Set door embodying cross sectiontaken on the forth the same as fully and as comprehensively as I may.

My door is comprised of the usual stiles, rails, and in this instance, asingle panel, but embodying my new features of construction. 5

The numerals l designate the stiles of my door, the numeral 2 designatesthe bottomvrail of my door, the numeral 3 designates the top rail, andthe numeral 4 designates the panel of my door. 1()

Each of the stiles of my door is comprised of a core member 5 and themetal sheathing 6. Each of the core members 5 extend the full height ofthe door, and the metal sheathing 6 extends beyond the ends thereof.Each of the core members 5 has a channeled slot 5 formed therein andextending the full length thereof, and into which the edges of the metalsheathing B are turned. Near the ends of each core member 5 mortises areformed, the purpose of which will be hereinafter set forth.

The numeral 9 designates a channel member which is preferably formed ofsheet metal, said channel member 9 being inserted in the channeled slot5 before the metal covering is ap- 25 plied thereto. The channel member9 together with the metal sheathing 6 completely surround the coremember 5.

The panel 4 of my door is comprised of the central portion 1, and towhich the metal covers 8 are secured.

The numeral l0 designates the moulding member which is adapted toreceive the panel 4. The moulding I0 has the channel-shaped portion l0.'formed integral therewith and which is adapted to be inserted betweenthe turned-in edges of the metal covering 6.

Both the bottom rail 2 and the top rail 3 have the tenons 2' and 3'respectively formed thereon, and which are adapted to be inserted intothe mortises which are formed in the stiles near the ends thereof. Therails 2 and 3 are covered with metal in the same manner as the stilemembers.

In the construction and assembly of my door, the central portion 'l ofthe panel is secured be- 45 tween the metal covers 8 by glueing underpressure, the moulding members l0 are mitered and the panels areinserted thereinto', after which the mitered portions of the mouldingmembers I0 vlare welded, thereby forming a continuous frame around thepanel. The Stiles and rails having been milled to their proper sizes,and the mortises formed therein and near the ends thereof, the tenonsbeing formed thereon respectively, and the channels 9 inserted in thechanneled portion 5', 55

are covered separately with metal by drawing the metal and the corethrough a die simultaneously, the die being adapted to turn the edges ofthe metal into the channel 5. The stiles and rails are then assembledaround the panel 4 and the moulding I0, the portion I0 being insertedinto the channeled slots of the stiles and rails, each of the tenons 2and 3 being inserted into their respective mortises. The door is thenplaced in an adjustable form which is adapted to hold the members inclamped relation with each other. While the door is thus held in theclamped position, the nails I I are driven through the end portions ofthe rail metal, through the metal sheathing 6 and then through thetenons 2' and 3 as shown in Figure 3, thereby securing the rails andstiles together. After the nails I I are driven into place, the recesseswhich are formed thereby are lled with solder and then ground smooththereby presenting an invisible joint between the rails and the stiles,and also forming ajoint between the members which has been proven to bepracticallyv indestructible under severe tests.

The nails I2 are driven through the metal sheathing of the stiles andrails, through a portion of the core member, through the channel member9, the moulding portion I0', the panel members 'I and 8, al1 as shown inFigure 2, and thereby securing these members together and preventing themoulding member I0' from withdrawing from the channeled slots when thedoor is exposed to excessive heat, such as a door is subjected to incase of fire. After the nails I2 are driven into their respectivepositions, the recesses formed thereby are illed with solder, which islater ground ush with the adjoining surface of the metal covering.

The portion of the metal sheathing which projects beyond the ends of thestiles is notched, forming the portions 6a, 6b and Iic which are adaptedto be folded over the end portions of the stiles. In closing the endportions of the stiles, the portion 6a is first folded over the end ofthe core, then the portions Gb and 6 are folded over, thereby completelyclosing the end portions of the stile members. The n'a'ils I3 are thendriven to secure' the portions 621, 6b and 6c to the end portions of thestiles.

After the door has been assembled, the metal sheathing is pierced andforming the vent holes I4 which are then iilled with solder, and whichis later ground Hush' with relation to the surroundin'g metal sheathing.

When the door is subjected to excessive temperatures caused by naines,the solder is melted out of the vent holes I4 thereby allowing any gas,which might be generated inside the' cores, to escape therethrough, andthereby preventing the metal covering or sheathing from bulging.

It has been proven by actual tests that my door construction is capablevof withstanding extremely high temperatures for an exceptionally longperiod of time without permitting smoke or flames to escape from theunexposed side of the door, and, dueto my construction, the door hasunusual strength.

I desire that it be understood that minor changes may be made in theseveral details of construction herein shown and described, withoutdeparting from the spirit of my invention or sacrificing any of theadvantages thereof which are new, and which involve invention.

Having now fully shown and described my construction, what I claim anddesire to secure by Letters Patent of the United States, is-

1l In the construction of lire-resisting doors, the combination of stileand rail members each having a channeled slot formed therein, channelmembers inserted into said channeled slots, metal sheathing drawn overthe stile and rail members and having its edges turned into saidchanneled slots, a panel member inserted into a moulding member andtogether with said moulding member inserted into said channeled slots,and means for retaining said moulding and panel members in saidchanneled slots, all substantially as shown and described.

2. A fire-resisting door, having in combination, stile and rail members,each of said stile and rail members having a channeled slot formed inone edge thereof, metal sheathing drawn onto the stile and rail memberswith its edges turned into said channeled slots, a mouldingmember havinga channel portion formed integrally therewith, said channel portionbeing inserted into the channeled slots of the stile and rail members, apanel member inserted into the moulding member, a channel memberinserted into the channeled slots of the stile and rail members, meansfor securing all of said members together, and vent holes formed in saidmetal covering for permitting gas to escape from the enclosed stile andrail members.

3. In the construction of nre-resisting doors, the combination of stileand rail members and metal covering therefor, means for securing the endportions of the metall covering of the rail members through the metalcovering of the stile members, and vent holes formed through the metalcovering for automatically permitting gas which may be generated by heatto escape from .inside the metal covering, all substantially as shownand described.

4. Fire-resisting doors, comprising in combination, wood stile and railcore members and a panel member, metal covering secured on said stile',rail and panel members, vent holes formed in the stile and rail metal,said vent holes being lled with solder which will melt out of said Vventholes when exposed to excessive high temperatures and thereby permit theescape of heatgenerated gases from within the metal covering.

5. In the construction of nre-resisting doors, wood stiles and rails,each having a channelshaped slot formed longitudinally in one edgethereof, a channel member adapted to be inserted in said channel-shapedslots, pre-formed sheet metal members adapted to cover said stiles andrails and having the edges thereof vturned into the channel member andthereby entirely encasing said stiles and rails.

6. In the construction of metal covered fireresisting doors, means forpermitting the escape of heat-generated gases from the interior of themetal covering when the door is exposed to excessive high temperatures,said means comprising vent holes formed in the metal covering and saidvent holes being lled with solder, whereby the solder will melt atexcessive high temperatures and allow heat-generated gases to escapefrom within the metal covering through said vent holes.

JAMES F. PEELLE.

